Adjustable clasp for eyeglasses.



' No. 858.394. PATENTED JULY 2, 190?.-

HUTTON. ADJUSTABLE ems? FOR EYEGLASSES,

APILIOATION FILED NOV. 19, 1906.

AMOS HUTTON, or HAMILTON, ONTARIO, CANADA.

ADJUSTABLE oLAsP FOR EYEGLASSES.

, 'King of Great Britain, and'a resident of Hamilton; in

i means for adjusting thestrap and arms to the lens, with- 3 0 the county-of Wentworth and Province of Ontario, Canada, have invented new and useful lmprovements in Adjustable Clasps for Eyeglasses, of which the following eye glasses in which straps are rigidly fixed to the sides of a rimless eye glass and more especially the end of the glass, or lens, is rigidly fixed and locked to the base or root of said straps and to the concave of the arms of the straps, and locked thereto by means of an eccentric sleeve through the lensv and a screw through astrap and 'into thesleeve.

The objects of my invention are, first, to provide means adapted to adjust the inner end edges of 'the glasses, or lens, to the closest possible contact with the base or root of the clasp, or side straps and consequently in rigid contact withthe upper andlower flanges, or arms, of said clasp,- and held permanently locked thereto, second, to provide means for drawing or adjusting the inner end of the lens to the base or root of the straps and to the said concavearms thereof, and for retaining the same together in rigid and locked position; third, to afford facilities for the easy rapid and convenient mannor in whichsaid adjustments are accomplished and permanently locked together, and fourth,'to provide out any screw or thread coming in contact with the lens or with any hole in the lens, thereby avoiding any possibility of breakage of the lens, or the breakage of the lens around the hole in the lens. I attain these objects drawing in which:

Figure 1 is an elevation ofan eye glass embodying my invention. Fig. 2 is an enlarged elevation of the lefthand part of the same, the upper, lower and outer end part of the lens being broken away. Fig. 3 is a sectional plan of Fig. 2 of the. drawing. Fig. 4 is the same sectional plan of Fig. 3, of the drawing as seen with the shown in Fig. 3 of the drawir g, and Fig.'7 is a. detail elevation of the eccentric sleeve, and screw, as shown in Fig. 6 of the drawing, and as viewed from the opposite side of the eye-glass.

, Similar characters refer to similar parts throughout the several views.

In the drawing theclasp, or straps is indicated by A,

' and fits close'to the glass, or lens, B, of the eye-glass, the

mechanism on each side of the glasses B, and which se- Specification of Letters Patent.

Application filed November 19, 1906'. Serial No- 343,975.

Patented July 2, 1.907.

v in every particular, therefore, by describing the mech-;

ahism of one lens, the mechanism of the second lens is also described.

G, are the upper and the lower concave arms, or branches, of the horizontal straps A, and form a part of the same, and the inner end of the lens fits closely to the concave part of the arms and to the root or beginning ol the straps A.- The lens B, has a round hole Znear to the inner end thcreof,,as shown in Fig. 5 of the drawing. 4 One part of the straps A, has a round hole 3 with an outer countersink 4,a'n d the opposite strap has a larger and directly opposite round hole 5,with an outer countersink 6. The l1olcs3and 5 have one common centcr.-

D is a round beveled head with an outer slot 7, as means for rotating the same in the countersink 6, of the strap A. The head D is shown very fully in Fig. 3 .of

the drawing in position, and in Fig. (i of the drawing, out ofposition.

E is a sleeve on the inner side of the round head D,

and-ispositioned eccentric with the head D and forms a partof the same,- and extends partially through the lens and adapted to rotate .very loosely in the round a hole 2, of the lens. The sleeve E has a round threaded hole 8 into which is screwed the screw S, and the hole 8 is out of center of the sleeve E, but always in-center of the holes 3 and 5, together with the countersinks 4 and and similar to the slot 7, in the head D, said slots being common to screws and the like. The head Dand the screw S are always in central line one with the other, b'y the mechanism illustrated in the accompanying the base or root 12, of the straps and also in close contact with the concave, side of the upper and the lower arms 0 of the straps, and locked.

In assembling the parts mentioned, the straps are placed on the lens, and the inner end of the lens may be a slight distance away from the base or root 12, and

i the concave arms 0 of the straps A, as shown in broken' line 13, in Fig. 3, of the drawing. This non contact of the end of the lens with the base of the straps and arms allows the free insertion of the sleeve E, with the head D, together with the. screw S, in their respective places and without the slightest difliculty. At this time the head D is rotated in the direction indicated by arrow in Fig. 6,'of the drawing, together with the eccentric sleeve in the same direction as indicated-by arrow in sleeve are securely fastened and locked to the lens.-

, The rotary movement of the sleevedraws the lens to its definite position, that is, to the base of the straps as previously mentioned,v but it may also be said that the said rotary movement of the sleeve draws the base of the strap to the lens by means of the head or outer end parts of the screw S, and the head D operating in the straps The feature of drawing the end of the lens to contact with the base of the straps, or drawing the base of the strap to the lens and locking the same to definite position is important. Again, when the rirnloss eye glass has been in more or less constant use forycars and if the armsshould possibly become loose from the end ofthe lens, as is very common in rimless eyeglasses now in use, then the screw S may be slightly loosened and the head D tightened by slightly rotating the same, as indicated, by arrow, the screw S may then be tightened to again lock the device for use again.

When assembling ordinary straps with arms and lens to form a rimless eye glass, as is common, it is almost impossible to assemble the same, without diiliculty, and to retain the said parts together in rigid Contact one with the other, and especially in contacting the end of the lens with the base of the straps without breaking the lens. This invention allows the strap to be adjusted to the lens and the arms and base of the straps to be brought to rigid position with the end of the lens, and there locked.

What I claim as my invention Letters Patent, is:-

1. In u'rimless eye glass, u lens with round hole, straps having holes of one center, on both sides of the lens, arins extending in opposite directions froln the straps and adapted to in the end of the lens, means extending through a hole in ou ide strap'nnd into the hole in the lens and adapted to rotate therein and adjust the arms to the lens and means extending through the hole of the opposite side strap and into the first mentioned menus to lock the straps to the lens.

2 In a riinless eyeglass, a lens having a hole, straps having holes of one common center on each side of the lens, a head adapted to rotate in one said hole of the straps, an eccentric sleeve on said head extending into the hole of the lens and adapted to rotate therein by the rotary movement of the head to Contact the base of the straps to the end of the lens.

3. In a rlmless eye glass, straps having holes directly opposite to each other, uri'ns extending in opposite directions on the straps, a lens between said straps and having a hole out of center \vith'suid opposite litllOS,lll(illiS adapted to rotate in the hole of one said strap and extending into the hole of the lens, to adjust the arms to the lens, nndnienns extending through the hole of the opposite strap and into the first said means adapted to rotate and lock the strap to the ions.

4. in a rlmless eye glass, :1 lens having a hole, strnps having countersunk holes opposite to each other, means extending through one said strap and into the hole in the lens. adapted to adjust the base of the arms to end from the end of the lens, :ind means extending through the opposite said strap and into the first mentioned means adapted to lock the straps .to the lens.

and desire to secure by AMOS HUTTON.

Witnesses:

JOHN H. HENDRY, B Bnouen'ron. 

